No category-specific facts could be extracted from this document.
The reasons the company gives
The company's own explanation, not something inferred from the numbers.The optical business reported higher revenue on firm demand for optical press-molded products for digital cameras and other products, while price revisions also contributed to reducing the loss. However, higher raw material costs, measures to address rare-earth procurement risks, the abolition of value-added tax refunds and higher personnel expenses weighed on profit. The electronics business saw increased sales of products for optical communications equipment, but profit declined because of a deterioration in the product mix resulting from first-half inventory adjustments for products used in semiconductor lithography equipment, as well as higher personnel expenses.